Lock



A. YUROW.

LOCK.

APPLICATION man 1uLY14,192o.

1,415,503. n mma May9,1922.

5mm/wrom andrew Vu-row ANDREW Ynaow, or NEW Yoan, n. Y.

l Loox.

To @ZZ whom it may concern Be it known that I, ANDREW Ynno'm a citizen of the United States, residing at New York, county of N ew York and State of New York, have invented certain new and useful Improvements in Locks. of which the iollowing is a specification.

This invention relates to improvements in door locks, particularly looks comprising a skeleton bolt which is normally pressed inwardly, and it is the object of the invention to provide a lock which may be opened from the inside without a key but requiring the use of a key to open it from the outside.

Another object of the invention is to provide a lock in which the skeleton frame of the bolt is operated by a knob and is kept, if desired,locked in its inoperative position by suitable means provided for this purose.

p Further objects and advantages of the invention will become apparent as the description proceeds, reference being' had to the accompanying drawing, pended claims in which the novel features of the invention v are more particularly set forth. Y.

In the drawing` f Figure 1, is a front elevation of a casing containing the lock constructed according to the present invention, attached to the inside of a door. l

Figure 2 is a top plan viewr thereof, Vand Figure 3 is an inner view along line 3*?) of Figure 2, after removal of the rear plate of the casing. i l

Figures 4 and 5 illustrate-in two views partly inseetion, the contour of the bolts.

As illustrated, the lock comprises a casing 10 of the well known oblong shape which is adapted to be secured to the inner face oi' a door in any desired manner, for instance as shown by screws 1 1, the face of the casing in contact with the door being formed by a removable plate, provided with a keyhole 12.

The bolt has the form of an oblong rectangular skeleton member comprising side bars 13 and 14, connected at their forward ends by a cross-bar 15 extended ybeyond the side bars 13 and 14 as at 16 and 17 and being substantially triangularly shaped in crosssection to form a sharp web adapted to engage with a keeper consisting of an angle plate 18, 19 adapted to be secured by suitable screws or the like to the door frame and and to the ap-v '10, which' at thisv place has Specification or Letters Patent.A Patented *99 Application filed Julyy 14, 192). Serial No. 396,134. I

' having three. rearwardly turned hook members 20, 20 and 20 Vvdapted .to be'` normally engaged bythe bar 15, so that the-extensions 16 and 17 of the bar. 15 rest against inner shoulders of the members 20 and 20, while wedge-shaped shoulders.` 21 and .23 of the casing 10 rest against the outer faces of said members 2O and 20, vand lugs 22 on ythe outer members 20 and 20 engagesuitable recesses in the shoulders 21V and 23.

` The side bars 13 and f14jof the. skeleton member are formed with two rearwardly ex,- tending bars or rods 24 and 26 provided at their inner ends with small operatingy plates 27 and 28 respectively. A partition wallk 29 is arranged transversely within'the casing 10 in approximately the center thereof, and rests against shoulders 30' and 31 formed with the inner walls of the top and bottom plates 32 and 33 of the casing respectively.

Colled springs 34 and 35 are wound around skeleton member in engagement with the the keeper 18. "An.operat' hook members of ing member 36v provided with two operating fingers 3"? and 38 is pivotally secured to the inner lwall of the cover plate 25 of the casing an opening for thel passage of, the cylindrical stem. yofthe knob 40, the lower edge 39 of whichis hammered down upon theinner face of the member 36', so that the its pivot upon the either direction in such a manner, that one or the other finger of 37 or y38V of the member 36 willr engage and press against one or the other of the operating-plates 27 or 28 respectively in ,order to slide the skeleton bolt member out of 'engagement with the keeper` 18 against the action of the springs34 and 35, so that the door can be opened by the operation or rotation of the knob in one or the other direction from the inside and by a key operating said knob from the 'outside in order to be automaticallylocked when the knob or key is released. i

A sliding latch 39 is slidable between pairwise arranged guides 40 and 41 transversely to the casing on the inner lface of its wall 25, and its rectangularly bent upper arm 42 is provided with a hook outer end, adapted to engagea recess within same will be turned about,v operation of the knob' at 43 at its the bar i8 at the lower edge thereof. intermediate its ends the latch S9 is provided with a pin extended through an elongated slot in the wall operating slide plate or knob end sliding over a suitable flange on said front wall surrounding the slot therein. It will be clear, that upon the operation of the knob 45 to engage the hook 43 with the bar 13, the skeleton member of the bolt will be locked against operation by the knob 40, and the door will be kept closed, so that it may also not be Opened from the outside by a key. 1When however the knob 45 is operated to disengage the hook lf3 from the bar i3, it will be possible to open the door 'l'roin the outside by a key as well as from the inside by the operation of the knob in either direction 1which both will produce an engagement oi either linger 3T and 38 of plate 36 with either of the plates 27 and 28, as the 'case may be, to press the skeleton member of the bolt against the action orPv the springs 234i and 35 to the outside and out or engagement with the hooks 20, 20 and 20" or' the keeper 18, so that the door may now be opened.

It is believed the operation of my improved lock will be apparent from the foregoing description, and it will be clear that changes may be made in the minor details and arrangements or the parts without departing from the scope and spirit of my invention as set forth in the appended claims. i

Having thus described my invention what I claim as'new and desire to secure by Letters Patent of the United States isl. er lock comprising a casing, a bolt therein composed ot a pair of side bars, a cross-bar unitingy said side bars at their front ends, projections on said cross bar adapted to normally engage a keeper, said keeper composed of three members, two ot said members provided with shoulders 'for the engagement by said projections of the cross bar, shoulders on said casing engaging the outer faces of the outer keeper members, one ot the side bars of said bolt being recessed at its lower edge, means 'for operating said bolt, a sliding latch sliding between guides on the inner face or the casing wall, a recat its outer of the casing and carrying an tangular bent arm on said latch provided with a hook at its outer end adapted to be engaged in the recess of said side bar, a pin on said latch extending through a longitudinal slot in the front wall of the casing to play therein, a slide plate on the outer end of said pin, and a socket surrounding said slot upon which said slide plate is gliding for locking and unlocking said bolt` and its operating means.

2. A lock of the character described comprising a casing, a partition wall, transversely arranged in said casing, a skeleton bolt therein ccmposed'o'f a pair of side bars,

operating plates at the inner ends o'l" said bars, springs surrounding said-bars between said partition wall andsaid operating plates, a cross-bar uniting said side bars their front ends, projections on saidl cross bar adapted to normally engage the keeper, said keeper composed of three members, a central and two outer'keeper members, one or' said members provided with shoulders 'for the engagement by said projections of the cross bars, shoulders on said casing engaging the outer faces of the outer keeper memn bers, one of the side bars ot said boltfre cessed at its lower edge, an operating member pivotally secured to the inner wall of the cover for saidv casing, an outer operating knob having a cylindrical stem extending into the casing and hammered down upon the inner tace ofqsaid member and a pairfofoperating ingers on said member adapted to engagethe operat` ing plates at the ends of the bolt bars, :Eor operating said bolt upon lthe operationy of said knob, a sliding latch sliding between guides on the inner face of the casing wall, a rectangular bent arm onv said latch provided with a hook at its outer endadapted having its lower edgey to be engaged'in the recess of said side bar, Y

a pin on said latchr extending throughy a longitudinal slot-in the front wallet the cas-`l ing to play therein, a slide plate on the outer end of said pin, and a slide socket surrounding said slot upon which said slide plate is gliding for locking and unlocking said bolt and its operating means.

In testimony whereof I have afxed my signature.

ANDREW YUROVV. 

